Hi all, Complicated subject line, but I'm trying to be too clever and it's _almost_ working but not quite... All files for this test case are here: https://drive.google.com/drive/folders/1LUy_q9PMTLYjgSbxqE_3XtzHIpPUojhJ?usp... Short version: trying to generate LRUD polygons and scaled sketches to one XVI file doesn't work properly as seen in wrong_positioning_in_xvi.th2. Long version: I have a set of (unscaled) sketches. I also have LRUD data. I have scanned the sketches. I don't want to draw directly on the sketches in xtherion as the passage widths will be wrong. I have discovered the functionality to output LRUD polygons as an XVI output which would probably be sufficient, but I was hoping to get the LRUD polygon output and the morphed sketches to both appear in the XVI so that I can do the drawing of walls in xtherion onto that XVI image. I know about the 'extra' point type, but I haven't used it in these examples for simplicity. *Input files:* 1-9p.png - the scan of the sketch Shredder.th - the th file containing the centerline and LRUDs Shredder_sketches-1-9p.th2 - a th2 file plotting stations onto the 1-9p.png image Shredder.thconfig - a thconfig file that outputs a number of things (using scale 1:50 because image quality in the morphed sketch is much, much better): *Outputs:* Produced with 'sketches on': shredder_sketch_plan.xvi shredder_sketch_plan.pdf shredder_sketch_plan.th2 shredder_sketch_plan.svg Produced without 'sketches on': shredder_lrud-plan.xvi Now, the shredder_lrud-plan.xvi file works fine, but obviously doesn't include the sketches. The shredder_sketch_plan.th2 is a bit useless; the sketch doesn't match up to the stations and no LRUD polygons are drawn, but I don't really care about that. Now the shredder_sketch_plan.pdf and shredder_sketch_plan.svg *actually work* - the LRUD polygons are drawn over the correctly morphed sketch and everything lines up. Unfortunately the PDF output is very pale with yellow-tinted polygons which are a bit tricky to see and obviously going from PDF back to an image to draw over in xtherion is a faff although very doable (assuming xtherion doesn't accept PDF as an image format). The SVG image is darker, but the yellow boxes are not transparent and so obscure the sketch. Neither have a centerline showing stations, so not useful to draw on anyway. The XVI output is much, much better to look at for drawing on - the sketch appears in detail, and the shaded but transparent blue polygons appear with a clear centreline. The only issue is that the sketch and the LRUD polygons/centerlines are misaligned and misscaled, as can be seen in the file wrong_positioning_in_xvi.th2. I presume this is _supposed_ to work, since things are correctly aligned in the SVG and PDF outputs? Andrew